libjpeg-turbo is a high-speed version of libjpeg for x86 and x86-64 processors. It uses SIMD instructions (MMX, SSE, SSE2) to accelerate baseline JPEG compression and decompression. libjpeg-turbo is generally 2-4 times as fast as the unmodified version of libjpeg. It also includes a wrapper library for the TurboJPEG API used by VirtualGL and TurboVNC. It was originally based on libjpeg/SIMD but has improved support for Mac OS X, 64-bit platforms, 32-bit and big endian pixel formats (RGBA/BGRA/ABGR/ARGB), accelerated Huffman encoding/decoding, and various other fixes.

The Generic Image Decoder (GID) is an Ada package for decoding a broad variety of image formats, from any data stream to any kind of medium, be it an in-memory bitmap, a GUI object, some other stream, floating-point data for scientific calculations, a browser element, a device, etc. Animations are supported.

ppcrack decrunches all types of Amiga PowerPacker files, including encrypted files. It does not need the password. It can crack the correct decryption key within a few minutes. It also has a dictionary attack for immediate decryption.

decotengu is a dive decompression library to experiment with various implementations of the Buhlmann decompression model with Erik Baker’s gradient factors. The results of decotengu calculations are decompression stops and tissue saturation information. Third party applications can use those results for data analysis purposes or dive planning functionality.